[Bug 570450] Re: regression in /etc/acpi/powerbtn.sh causes it to fail entirely on Ubuntu servers

[Launchpad Bug Tracker]

This bug was fixed in the package acpid - 1.0.10-5ubuntu2.1

---------------
acpid (1.0.10-5ubuntu2.1) lucid-proposed; urgency=low

  * debian/powerbtn.sh: ensure that /usr/share/acpi-support/power-funcs
    exists before sourcing it; note that acpid does not depend on
    acpi-support (which is fine, as it brings in lots of X dependencies
    not appropriate for servers); this fix will allow Ubuntu servers
    (especially those in VMs) to run acpid and catch and handle power
    button events again; LP: #570450
 -- Dustin Kirkland <kirkland at ubuntu.com>   Mon, 26 Apr 2010 17:25:02 -0500

** Changed in: acpid (Ubuntu Lucid)
       Status: Fix Committed => Fix Released

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regression in /etc/acpi/powerbtn.sh causes it to fail entirely on Ubuntu servers
https://bugs.launchpad.net/bugs/570450
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Status in “acpid” package in Ubuntu: Fix Released
Status in “acpid” source package in Lucid: Fix Committed

Bug description:
Binary package hint: acpi

The last upload of acpid causes a problem on systems which do not have the acpi-support package installed:

acpid (1.0.10-5ubuntu2) lucid; urgency=low

  * Source /usr/share/acpi-support/power-funcs in powerbtn.sh (LP: #508073)

 -- Jonathan Thomas <echidnaman at kubuntu.org>  Fri, 15 Jan 2010 19:59:47 -0500


The sourcing of the file happens unconditionally, and the acpid package does not depend on acpi-support, which provides that file.

This could be solved by adding acpi-support to acpid's depends, however, this isn't desirable because it pulls in several X related packages which we would not want on a server.

Instead, let's only source that file if it exists.  If it doesn't, then there is a foolproof failure case handling at the bottom of that script.